Process of manufacture of smokeless gunpowder.



{TEXT-ED TATE FAT FRIEDRICH ALEXANDER RITSCHKE, OF

GEESTHACHT-ON-THEELBE,

SIGNOR TO E. I. DU PONI DE NEMOUBS POVJD'ER COMPANY, (31 'LVEILINEIING'LUABZ', BEIGE..- WARE, A CORPORATION OF NEVJ JERSEY.

PROCESS OF MANUFACTURE OF SMOKELESS GUTIPK'EWBIEE.

1,909,57 7. No Drawing.

Specification of Letters Patent. Application-filed May 18, 1911. Serial No. 627,9i38.

T all whom it may comic/"n Be it known that I, Fiunniucn ALEXA N nnn Rnscnnn, subject of the German Emperor, residing at Bergetlorferstrnsse 3, Geestlurcht-on-the-Elhe, Germany, have invented a new and useful Improvement in Proc esses of the Manufacture of Smokelesz Gunpowder, of which the following a. full, clear, and exact. description.

1. have discovered that it is possible to gelzrtinizc nitro cellulose of any desired nitrogen content and to make gelatin, containing less than thirty per cent. of nitro glycerin, without the addition of a solvent, volatile or non-volatile, and to pre pare, from the gelatin thus produced, pow der in the shape of tubes.

My method is as follows: I mix nitro cellulose and nitro glycerin, in proportions of less than thirty per cent. (30%) of nitro glycerin. This mixture is passed through rolls which are heated to a. temperature of substantially ninety (90) degrees centigrzulc. From this 1 form tubular powtler at on average pressure of not less than two huntlrctl (200) atmospheres.

JALS an example 75 parts by Weight of nitro ccllulor weight of n. passed through roll. .1 temperature of ,uilrstznztlr' glOtn' ccntigiwle. w muternrl is tormeo c; presses at an ever-age pressure of pheres,

the temperature of sulistentielly 90 C. being nniintuinetl Juring the treatment in tubes. 7

liming now fully describeci my invention, what I claim and desire to protect by Letters Patent is:

The process of making an explosive sub- StlXIlCC of nitro-cclhilose and less than 30% of nitro glycerin Without employing other gehu'inizing agents or solvents consisting in heating the substance to it temperature 40 of about Centigrade and shaping it under a pressure of at least 200 atmospheres.

In testimony of which in vcution, lnrve hereunto set my hand, at lleniburg, on this 28th (lay of April, 1911.

FRIEDRICH ALEXANDER RllSCllKE. Witnesses:

Ennns'r H. L. MUMMEN Horn,

A Cnnis'r. HArnnnANbr. 

